Ratchet-wrench.



W. S. BELLOWS.

RAIGHET WRENCH.

APPLICATION III-ED DEO.16, 1912.

Patented Nov. 10, 1914.

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WARREN S. BELLOWQ, 0 WORCESTER, MASSACHUSETTS.

IRATCHET-WRENGI-I.

Specification 01 Letters Patent.

Patented Nov. 10, 1914.

Application filed December 16, 1912. Serial No. 736,948.

To all whom it may concern Be it known that I, "WARREN S. BELLows, acitizen of the United States, and a resident of the city and county ofWorcester, in the Commonwealth of Massachusetts, have in vented certainnew and useful Improvements in Ratchet-lVrenches, of which the followingisa full and exact description.

The object of this invention is the construction of an improved ratchetwrench wherein the revolving head is located in a wire seat and operatedby a handle of wire.

Referring to the drawings forming part of this specification, Figure 1is a side View of a wrench embodying one form of my invention. Fig. 2 isa longitudinal section of the same. Fig. 3 is a side view partly insection of a modification of the wrench. Fig. 4: is a cross section onthe line XX in Fig. 3. Fig. 5 is a side View of the preferred form ofthe invention. Fig. 6 is a longitudinal section of the latter. Fig. 7 isa cross section on the line YY in Fig. Fig. 8 is a cross section on theline ZZ in Fig. 5.

In each of the forms of my invention illustrated, the head 1 formed witha wrenchsocket 2 is circular in outline, with a groove 3 in itsperipheryhaving its bottom or inner face provided with ratchet teeth 6,as in Figs. 2 and 6. A. wire rod l passes about said head in saidgroove, and a pawl 5 is provided for checking the rearward rotation ofthe head.

In the construction shown in Figs. 1 and 2, the wire rod 4t is bentnearly doubleto embrace the head 1, with its terminal sections parallelwith each other, but stepped so that the outermost part of the terminalsections are nearer each other than the parts adjacent to the head. Onsaid outermost parts 9 is mounted a flattened sleeve 10 to serve as ahandle, and on the innermost parts 11 is mounted a cross head 12 havinga socket 13 therein receiving an end of the pawl 5 whose opposite endengages the teeth of the head 1. A screw 15 fitting a notch in the pawlkeeps the latter from withdrawal from its socket; and a spring 16 keepsthe pawl pressed into its engagement with said teeth 6. A wire 17 bentabout the sections or parts 11 holds said sections from spreading apartunder the strain of use, and also insures the pawl against lateraldisplacement.

Fig. 3 illustrates a form of the Wrench which is provided with arevolving head at each end, so that a single tool can have two sizes orshapes of wrenclrsocket, each end composing the handle for the other.Here the ends of the red are brought together and fixed within the crosshead 20, and the pawls are in a single length of rod held in said crosshead by a screw 15 in the same way as in the wrench above described.

The preferred form of wrench illustrated in Figs. 5 to 8 has its redterminals arranged in the same way as first described, but instead ofthe sleeve 10, narrow bands 21, 22 are employed for fastening saidterminals, and a straight rod 23 is introduced between said terminals,having an end tightly enter ing the block 24-. The sections 11 of saidterminals pass for nearly their entire length through said block, whichis preferably split into two parts fastened together by screws or rivets25. Within said block is a recess 26 within which loosely rests a pawl 5given ample play for permitting the head 1 to revolve in one direction,while a turn in the opposite direction is immediately resisted by saidpawl. A spiral or helical spring 29 fitting in a recess in the block anda notch in the pawl, acts both to press the latter into engagement withthe ratchet teeth 6, and to hold the pawl in the recess 26. Said block21- is formed with a lip 30 hugging close against the bend 31 of thewire rod and designed to brace the same against flattening out under thestrain of use.

This form of ratchet wrench is especially made for heavy work, and iscapable of withstanding very powerful strains. The three-ply handle ispractically a truss and will. not bend, and is absolutely incapable ofbreaking. The wrench is therefore perfectly adapted for linemens use, asit is not only effective and powerful, and will not break if dropped oreven thrown from the top of a pole.

Since the pawl 5 butts end on against the bottom of the recess 26 in theblock 24, and the latter is in contact with the bends82 of the rodterminals and cannot be pushed farther away from the ratchet head 1; andsince the same bends 32 are holding the rod in place about the head,there can be no give to this wrench, but its turning power is verygreat.

What I claim as my invention and for which I desire Letters Patent is asfollows, to wit 1. The combination with a circular head having a toothedgroove in its periphery, of a length of metal rod bent about said headin the groove and having its terminalssubstantially parallel, a blockinclosing a part of each of the terminals close to said head, saidterminals being constructed to prevent said blocks sliding thereon awayfrom said head, an inclined recess being formed in said block facingsaid head, the recess being wider at its mouth than at its inner end, asection of metal rod terminally seated in said recess against the bottomthereof, a recess being formed in said block transverse to thefirst-named recess, and a helical spring located in said transverserecess for pressing said section of rodinto engagement with the teeth insaid groove.

2. The combination with a circular head having a toothed groove in itsperiphery, of a length of metal rod bent about said head in the grooveand having its terminals substantially parallel, a block inclosing apart of each of the terminals close to said head, said terminals beingconstructed to prevent said blocks sliding thereon away from said head,said block being formed in two separable sections fastened together andhaving a tapering recess between said terminals facing said head and atransverse recess, a section of metal rod terminally seated in thetapering recess and a helical spring located in the transverse recessand pressing said section of rod into engagement with said teet 3. Thecombination with a head having a circular toothed groove therein, of alength of metal rod bent at midlength about said head in said groove andhaving parallel terminals, the outermost sections of which are ofiset tobring them nearer together than are the inner sections, means forrigidly connecting said outermost sections, a block penetrated by saidinner sections, the ofi'sets acting as shoulders-for said block, and apawl carried by said block in engagement with said teeth.

l. The combination with a head having a circular toothed groove therein,of a length of metal rod bent at midlength about said head in saidgroove and having parallel terminals, a block penetrated by saidterminals near said head, a pawl carried by said block in engagementwith said teeth, and a straight rod fastened to said terminals betweenthe same and having one end set into said block.

5. The combination with a head having a circular toothed groove therein,of a length of metal rod bent about said head in said groove, a blockpenetrated by said rod, and a pawl carried by said block in engagementwith said teeth, said block being formed with a lip disposed to supporta portion of said rod within said groove.

In testimony that I claim the foregoing invention, I have hereunto setmy hand this 9th day of December, 1912.

WVARREN S. BELLOWS. lVitnesses CHARLES A. SHEDD, ETHEL R. ALLISON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

. Washington, D. C." 1

